Search results
Activated sludge and chemical precipitation treatment of wastewater containing anionic dyes resulted in dye removal efficiencies of less than 25% for Brilliant Blue, suggesting that biodegradation is not expected to be an important environmental fate process.
The chemical formation is C 37 H 34 N 2 Na 2 O 9 S 3. Related dyes are C.I. acid green 3 (CAS#4680-78-8) and acid green 9 (CAS#4857-81-2). In these dyes, the 2-sulfonic acid group is replaced by H and Cl, respectively.
FD&C Blue No. 1 is bright blue. It is used in sport drinks, dairy products, candy, cakes, and cake decorations. Its uncertified equivalent, or technical grade, is often used in cleaning products. FD&C Blue No. 2 is a darker blue and is used in baked goods, cereals, snacks, ice cream, and candy.
DEFINITION. Consists essentially of Disodium 3-[N-ethyl-N-[4-[[4-[N-ethyl-N-(3-sulfonatobenzyl)-amino] phenyl] (2-sulfonatophenyl)methylene]-2,5-cyclohexadiene-1-ylidene] ammoniomethyl] benzenesulfonate and its isomers and subsidiary colouring matters together with sodium chloride and/or sodium sulfate as the principal uncoloured components.
Brilliant blue occurs as a dark purple to bronze powder or granules. It is a triphenylmethane dye, and is principally the disodium salt of ethyl [4-p– [ethyl(m-sulfobenzyl)amino] -α−(o-sulfophenyl)benzylidene]-2,5-cyclohexadien-1-ylidene] (m-sulfobenzyl)ammonium hydroxide inner salt and may be converted to the corresponding aluminum lake.
30 sty 2009 · Blue No. 1 is called "brilliant blue" and, as is typical of modern dyes, was originally derived from coal tar, although most manufacturers now make it from an oil base. Blue No. 2, or "indigotine...
petroleum base is Blue No. 2, or indigotine, which is a synthetic version of the plant-based indigo dye, used to color blue jeans. How to color food What makes a good food coloring? First, when added to water, it must dissolve. If the dye is not soluble in water, it does not mix evenly. When a typical solute, such as salt or sugar,
